US8696349B2 - Staged combustion method using a low-oxygen gas - Google Patents

Staged combustion method using a low-oxygen gas Download PDF

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Publication number
US8696349B2
US8696349B2 US10/582,259 US58225904A US8696349B2 US 8696349 B2 US8696349 B2 US 8696349B2 US 58225904 A US58225904 A US 58225904A US 8696349 B2 US8696349 B2 US 8696349B2
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Prior art keywords
oxygen
oxygenated
fuel
gas
jet
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US20070281254A1 (en
Inventor
Bertrand Leroux
Remi Pierre Tsiava
Patrick Jean-Marie Recourt
Benoit Grand
Pascal Duperray
Loic Sylvestre
Mohand Amirat
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LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
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LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
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Assigned to L'AIR LIQUIDE, SOCIETE ANONYME A DIRECTOIRE ET CONSEIL DE SURVEILLANCE POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES GEORGES CLAUDE reassignment L'AIR LIQUIDE, SOCIETE ANONYME A DIRECTOIRE ET CONSEIL DE SURVEILLANCE POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES GEORGES CLAUDE ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: SYLVESTRE, LOIC, TSIAVA, REMI PIERRE, AMIRAT, MOHAND, DUPERRAY, PASCAL, GRAND, BENOIT, LEROUX, BERTRAND, RECOURT, PATRICK JEAN-MARIE
Publication of US20070281254A1 publication Critical patent/US20070281254A1/en
Assigned to L'Air Liquide, Société Anonyme pour l'Étude et l'Éxploitation des Procédés Georges Claude reassignment L'Air Liquide, Société Anonyme pour l'Étude et l'Éxploitation des Procédés Georges Claude CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: L?AIR LIQUIDE, SOCIÉTÉ ANONYME À DIRECTOIRE ET CONSEIL DE SURVEILLANCE POUR L?ÉTUDE ET L?ÉXPLOITATION DES PROCÉDÉS GEORGES CLAUDE
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    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B29/00—Reheating glass products for softening or fusing their surfaces; Fire-polishing; Fusing of margins
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
    • C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
    • C03B5/235—Heating the glass
    • C03B5/2353—Heating the glass by combustion with pure oxygen or oxygen-enriched air, e.g. using oxy-fuel burners or oxygen lances
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/20—Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone
    • F23D14/22—Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone with separate air and gas feed ducts, e.g. with ducts running parallel or crossing each other
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/32—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid using a mixture of gaseous fuel and pure oxygen or oxygen-enriched air
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00—Combustion technologies with mitigation potential
    • Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00—Technologies relating to the processing of minerals
    • Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping

Definitions

  • the present invention relates to a staged combustion method employing an oxygen-rich oxygenated gas and an oxygen-lean oxygenated gas that can be used during phases in which the supply of oxygen produced by an oxygen production unit are interrupted.
  • Combustion methods employing oxygenated gases generally use oxygen coming from continuous oxygen production units, such as a cryogenic unit or a VSA (vacuum swing adsorption) unit.
  • a liquid oxygen reservoir is generally provided near the place where the combustion takes place.
  • this tank To reduce the storage costs of this tank and to avoid storing too large an amount of oxygen, which could classify the combustion site as a high accident risk site, it is generally preferred to reduce the capacity of this storage tank.
  • this reduction in storage capacity does not always allow the combustion to be fed for a long enough time during an interruption in supply.
  • One solution would be to supply the combustion with air, but generally burners employing a gas richer in oxygen than air do not permit the use of a large flow of air.
  • the object of the present invention is therefore to propose a combustion method and an associated burner usually operating with a gas richer in oxygen than air, allowing operation with air in the event of an interruption in the continuous supply of oxygen.
  • the invention relates to a method for the combustion of a fuel using an oxygenated gas, in which a jet of fuel and at least two jets of oxygen-rich oxygenated gas are injected, the first jet of oxygen-rich oxygenated gas, called the primary jet, being injected so as to be in contact with the jet of fuel and so as to generate incomplete first combustion, the gases output by this first combustion still including at least one portion of the fuel, and the second jet of oxygen-rich oxygenated gas being injected at a distance l 1 from the jet of fuel so as to combust with a first portion of the fuel present in the gases output by the first combustion, in which process an oxygen-lean oxygenated gas is injected at a distance l 2 from the jet of fuel so as to combust with a second portion of the fuel present in the gases output by the first combustion, and l 2 is greater than l 1 .
  • the invention also relates to a separate-injection burner assembly consisting of at least two blocks and comprising a combustible gas injection orifice and at least four oxygenated-gas injection orifices, in which:
  • the invention relates to the use of the above method when the continuous production of oxygen is interrupted.
  • FIG. 1 is a schematic view of a burner assembly according to the invention.
  • the invention therefore firstly relates to a method for the combustion of a fuel using an oxygenated gas, in which a jet of fuel and at least two jets of oxygen-rich oxygenated gas are injected, the first jet of oxygen-rich oxygenated gas, called the primary jet, being injected so as to be in contact with the jet of fuel so as to generate incomplete first combustion, the gases output by this first combustion still including at least one portion of the fuel, and the second jet of oxygen-rich oxygenated gas being injected at a distance l 1 from the jet of fuel so as to combust with a first portion of the fuel present in the gases output by the first combustion, in which method an oxygen-lean oxygenated gas is injected at a distance l 2 from the jet of fuel so as to combust with a second portion of the fuel present in the gases output by the first combustion, and in that l 2 is greater than l 1 .
  • the invention therefore consists of a staged combustion method in which the oxygenated gas needed for the combustion of the fuel is divided in the form of at least three jets.
  • One staged combustion method consists in dividing the quantity of oxygenated gas needed for complete combustion of the fuel into at least two complementary oxygenated-gas streams introduced at various distances from the stream of fuel.
  • a first complementary stream of oxygenated gas is introduced at a very close distance from the stream of fuel. This stream closest to the stream of fuel is called the primary stream; it allows partial combustion of the fuel at a controlled temperature, which limits the formation of NOx.
  • At least another complementary stream of oxygenated gas is introduced at a larger distance from the fuel than the primary stream of oxygenated gas.
  • the first, primary jet is injected so as to be in contact with the jet of fuel. This means that the distance between the jet of fuel and the primary jet of oxidizer is zero (apart from the possible presence of a duct wall separating these two jets).
  • This primary jet is a jet of oxygen-rich oxygenated gas.
  • an oxygen-rich oxygenated gas has an oxygen concentration of greater than 30% by volume, preferably at least 90% by volume. In general, the oxygen-rich oxygenated gas derives partly from a liquid oxygen storage unit.
  • the liquid oxygen may be diluted with air so that the oxygenated gas injected has an oxygen concentration of greater than 30% by volume, preferably at least 90% by volume.
  • the second and third jets of oxidizer are injected at some distance from the jet of fuel and from the primary jet; they make it possible to supply the quantity of oxidizer needed to complete the combustion of the fuel initiated by the primary jet.
  • the oxygenated gas of the second jet is rich in oxygen and this second jet is injected at a distance l 1 .
  • the distance l 1 is between 5 and 20 cm.
  • the third jet is lean in oxygen and is injected at a distance l 2 greater than l 1 and relates to an oxygen-lean oxygenated gas.
  • oxygen-lean is understood to mean an oxygenated gas having an oxygen concentration of at most 30% by volume. Preferably, this is air.
  • the distance l 2 is advantageously greater than 30 cm.
  • the sum of the quantities of oxygen injected by all the jets of oxygenated gas is approximately stoichiometric, that is to say within an interval of ⁇ 15% relative to the stoichiometric quantity needed for complete combustion of the injected fuel.
  • the quantity of oxygen injected by the jets of oxygen-rich oxygenated gas represents 10 to 50%, or more preferably 25 to 50%, of the total quantity of oxygen injected.
  • the oxygen-lean oxygenated gas may be preheated before being injected.
  • the invention also relates to a separate-injection burner assembly consisting of at least two blocks and comprising a combustible gas injection orifice and at least four oxygenated-gas injection orifices, in which:
  • the burner assembly is designed so that the distance l 1 is between 5 and 20 cm. Furthermore, the distances l 2 are advantageously greater than 30 cm.
  • the first oxygenated-gas injection orifice is advantageously placed centrally in the fuel injection orifice.
  • the burner assembly may include a third block having a fifth oxygenated-gas injection orifice placed at a distance l 2 from the fuel injection orifice and having an area of between 4 and 100 times the area of the third injection orifice.
  • the assembly therefore comprises two orifices of large area, each at a distance l 2 from the fuel injection.
  • the assembly may advantageously comprise two first blocks, two second blocks and one third block.
  • the respective distances l 1 and l 2 to each orifice in first pair of first and second blocks are preferably the same as the respective distances l 1 and l 2 to each orifice of the same type in the second pair of first and second blocks.
  • the second and third oxygenated-gas injection orifices of the two second blocks have the same distance l 1 and l 2 and area values.
  • the common fifth orifice has an area greater than that of the fourth orifices.
  • the invention relates to the use of the method described above for heating a glass charge or for a reheat furnace.
  • the invention also relates to the use of the method described above when the continuous production of oxygen is interrupted.
  • FIG. 1 illustrates the implementation of the method according to the invention using a burner assembly comprising five blocks.
  • the blocks 1 , 2 , 14 , 15 , 16 are integrated into the wall of the furnace 17 and shown from the front.
  • the blocks 1 and 2 each comprise:
  • the blocks 14 and 15 each comprise:
  • the area of the fifth orifice 13 is between 4 and 100 times the area of the third orifice 9 or 10 .
  • the fuel is injected by the orifices 3 and 4 and the oxygen-rich oxygenated gas is injected by the orifices 5 , 6 , 7 , 8 , 9 and 10 .
  • No gas is injected by the orifices 11 , 12 and 13 .
  • This method corresponds to a staged combustion method employing an oxygen-rich oxygenated gas with a primary jet and two secondary jets.
  • this burner assembly allows the method according to the invention described above to be implemented: the fuel is always injected by the orifices 3 and 4 and the oxygen-rich oxygenated gas is always injected by the orifices 5 , 6 , 7 and 8 . In contrast, no oxygenated gas is injected by the orifices 9 and 10 and an oxygen-lean oxygenated gas is injected by the orifices 11 , 12 and 13 .

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Gas Burners (AREA)
  • Pre-Mixing And Non-Premixing Gas Burner (AREA)
US10/582,259 2003-12-16 2004-12-03 Staged combustion method using a low-oxygen gas Active 2029-10-22 US8696349B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0351064 2003-12-16
FR0351064A FR2863690B1 (fr) 2003-12-16 2003-12-16 Procede de combustion etagee mettant en oeuvre un gaz riche en oxygene et un gaz pauvre en oxygene
PCT/FR2004/050647 WO2005059438A1 (fr) 2003-12-16 2004-12-03 Procede de combustion etagee mettant en oeuvre un gaz pauvre en oxygene

Publications (2)

Publication Number Publication Date
US20070281254A1 US20070281254A1 (en) 2007-12-06
US8696349B2 true US8696349B2 (en) 2014-04-15

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US10/582,259 Active 2029-10-22 US8696349B2 (en) 2003-12-16 2004-12-03 Staged combustion method using a low-oxygen gas

Country Status (10)

Country Link
US (1) US8696349B2 (de)
EP (1) EP1704366B1 (de)
JP (1) JP4819694B2 (de)
CN (1) CN100472134C (de)
AU (1) AU2004299684B2 (de)
BR (1) BRPI0417412B1 (de)
CA (1) CA2549511A1 (de)
FR (1) FR2863690B1 (de)
RU (1) RU2361149C2 (de)
WO (1) WO2005059438A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130298609A1 (en) * 2008-06-05 2013-11-14 Agc Glass Europe Method for operating a glass melting furnace

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FR2880410B1 (fr) * 2005-01-03 2007-03-16 Air Liquide Procede de combustion etagee produisant des flammes asymetriques
FR2892497B1 (fr) * 2005-10-24 2008-07-04 Air Liquide Procede de combustion mixte dans un four a regenerateurs
FR2895490B1 (fr) * 2005-12-22 2008-03-14 Air Liquide Procede d'oxycombustion etagee mettant en oeuvre des reactifs prechauffes
EP1995543A1 (de) 2007-05-10 2008-11-26 AGC Flat Glass Europe SA Wärmetauscher für Sauerstoff
FR2917155A1 (fr) * 2007-06-08 2008-12-12 Saint Gobain Emballage Sa Combustion diluee
DE102007041086A1 (de) * 2007-08-30 2009-03-05 Linde Ag Verfahren und Vorrichtung zum Schmelzen von Glas
FR2927409B1 (fr) * 2008-02-11 2013-01-04 Air Liquide Procede de chauffage d'un cru mineral dans un four de cuisson de type four tunnel
WO2010000709A1 (fr) * 2008-07-02 2010-01-07 Agc Flat Glass Europe Sa Alimentation de brûleur à oxygène chaud
US8632621B2 (en) * 2010-07-12 2014-01-21 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Method for melting a solid charge
EP2500640A1 (de) 2011-03-16 2012-09-19 L'AIR LIQUIDE, Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges Claude Verbrennungsverfahren mit niedrigen NOx-Werten und Brenner dafür
CN102175038B (zh) * 2011-03-17 2012-10-31 北京沃克能源科技有限公司 富氧或纯氧供风的高温贫氧燃烧系统
EP2551243A1 (de) 2011-07-26 2013-01-30 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Hybridinstallation und -verfahren für Glasschmelze
CN102425803A (zh) * 2011-09-14 2012-04-25 魏伯卿 多级顺磁富氧局部增氧射流助燃分层燃烧的方法
US9851102B2 (en) 2012-09-26 2017-12-26 L'Air Liquide Société Anonyme Pour L'Étude Et L'Exploitation Des Procedes Georges Claude Method and system for heat recovery from products of combustion and charge heating installation including the same
US9828275B2 (en) 2013-06-28 2017-11-28 American Air Liquide, Inc. Method and heat exchange system utilizing variable partial bypass

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US3729285A (en) * 1972-05-22 1973-04-24 G Schwedersky Burner and method of operating it to control the production of nitrogen oxides
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US5759022A (en) * 1995-10-16 1998-06-02 Gas Research Institute Method and system for reducing NOx and fuel emissions in a furnace
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US6409499B1 (en) * 1998-08-25 2002-06-25 The Boc Group Plc Variable stoichiometric combustion
FR2823290A1 (fr) 2001-04-06 2002-10-11 Air Liquide Procede de combustion comportant des injections separees de combustible et d oxydant et ensemble bruleur pour la mise en oeuvre de ce procede
FR2830606A1 (fr) 2001-10-05 2003-04-11 Air Liquide Bruleur adaptable a differentes puissances de fonctionnement
WO2004094902A1 (fr) 2003-04-18 2004-11-04 L'air Liquide Societe Anonyme A Directoire Et Conseil De Surveillance Pour L'etude Et L'exploitation Des Procedes Georges Claude Procede de combustion etagee d'un combustible liquide et d'un oxydant dans un four
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US2465525A (en) * 1943-12-15 1949-03-29 Daniel And Florence Guggenheim Reaction combustion chamber for unconfined charges or detonative fuel fed intermittently to the combustion chamber
US3729285A (en) * 1972-05-22 1973-04-24 G Schwedersky Burner and method of operating it to control the production of nitrogen oxides
US4761132A (en) * 1987-03-04 1988-08-02 Combustion Tec, Inc. Oxygen enriched combustion
US5759022A (en) * 1995-10-16 1998-06-02 Gas Research Institute Method and system for reducing NOx and fuel emissions in a furnace
US6409499B1 (en) * 1998-08-25 2002-06-25 The Boc Group Plc Variable stoichiometric combustion
WO2002027236A2 (en) 2000-09-27 2002-04-04 L'air Liquide Societe Anonyme A Directoire Et Conseil De Surveillance Pour L'etude Et L'exploitation Des Procedes Georges Claude Methods and apparatus for combustion in high volatiles environments
FR2823290A1 (fr) 2001-04-06 2002-10-11 Air Liquide Procede de combustion comportant des injections separees de combustible et d oxydant et ensemble bruleur pour la mise en oeuvre de ce procede
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FR2830606A1 (fr) 2001-10-05 2003-04-11 Air Liquide Bruleur adaptable a differentes puissances de fonctionnement
WO2004094902A1 (fr) 2003-04-18 2004-11-04 L'air Liquide Societe Anonyme A Directoire Et Conseil De Surveillance Pour L'etude Et L'exploitation Des Procedes Georges Claude Procede de combustion etagee d'un combustible liquide et d'un oxydant dans un four
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130298609A1 (en) * 2008-06-05 2013-11-14 Agc Glass Europe Method for operating a glass melting furnace
US8904823B2 (en) * 2008-06-05 2014-12-09 Agc Glass Europe Method for operating a glass melting furnace

Also Published As

Publication number Publication date
FR2863690B1 (fr) 2006-01-20
WO2005059438A8 (fr) 2005-09-29
CN1894540A (zh) 2007-01-10
JP2007514916A (ja) 2007-06-07
AU2004299684B2 (en) 2009-10-01
FR2863690A1 (fr) 2005-06-17
RU2361149C2 (ru) 2009-07-10
AU2004299684A1 (en) 2005-06-30
BRPI0417412B1 (pt) 2018-07-10
US20070281254A1 (en) 2007-12-06
JP4819694B2 (ja) 2011-11-24
EP1704366B1 (de) 2015-09-02
EP1704366A1 (de) 2006-09-27
WO2005059438A1 (fr) 2005-06-30
RU2006125431A (ru) 2008-01-27
CA2549511A1 (fr) 2005-06-30
BRPI0417412A (pt) 2007-04-03
CN100472134C (zh) 2009-03-25

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